benq e2200 / 5770 hd issues

[Vass]

What refresh rate are you running the monitor at? Most "full HD" display monitors won't go beyond a 60Hz refresh rate (as this the refresh rate of a 1080i TV which a Computer Monitor practically is if but for the lack of inbuilt tuner).

What is the maximum size the display currently acknowledges without forcing?

Are the nVidia drivers completely uninstalled when the ATI card is in?

Have you changed or do you need to change any BIOS settings between the two card installs?

Have you run updates including Windows Updates (Assuming you aren't boxing under Linux or using a Hackintosh), BIOS updates, ect?

Have you tried a different power rail off of your PSU (if you have multiple 12volt rails).

The current HD5770 I own runs 2 BenQ G2410HD's - 1920x1080 @ 60Hz. I did (previous as I've currently quit my job to study an IT Degree) box 2 instances of Wow, both at 1920x1080, one per monitor. I got a fairly solid framerate on each (given this mechine is getting along in it's years other than the new monitors and gfx card). I get solid framerates playing FPS style games, ect.

I would assume your issue more relates to a setup/config error rather than a fault with your hardware.

[death]

What refresh rate are you running the monitor at? Most "full HD" display monitors won't go beyond a 60Hz refresh rate (as this the refresh rate of a 1080i TV which a Computer Monitor practically is if but for the lack of inbuilt tuner).

What is the maximum size the display currently acknowledges without forcing?

Are the nVidia drivers completely uninstalled when the ATI card is in?

Have you changed or do you need to change any BIOS settings between the two card installs?

Have you run updates including Windows Updates (Assuming you aren't boxing under Linux or using a Hackintosh), BIOS updates, ect?

Have you tried a different power rail off of your PSU (if you have multiple 12volt rails).

The current HD5770 I own runs 2 BenQ G2410HD's - 1920x1080 @ 60Hz. I did (previous as I've currently quit my job to study an IT Degree) box 2 instances of Wow, both at 1920x1080, one per monitor. I got a fairly solid framerate on each (given this mechine is getting along in it's years other than the new monitors and gfx card). I get solid framerates playing FPS style games, ect.

I would assume your issue more relates to a setup/config error rather than a fault with your hardware.

Refresh rate is at 60 Mhz, max res w/o forcing is 1600x1200, all nvidia drivers are fully uninstalled upon replacing my ati back in. the bios im not to sure about, i tend to leave that alone as im not to good with it :P
gotten a majority of my windows updates. havent updated my bios., and my psu doesnt have multiple power rails

if you could posibly give me some ideas on where to go from here it would be appriciated

[Vass]

It's possible that the PSU just simply doesn't have the power to be spinning at full. Is the computer a custom build or a brandname? (The more info you can provide about what you run the better).